There could be several reasons why your thermostat won't turn on. It could be due to a dead battery, a tripped circuit breaker, a faulty wiring connection, or a malfunctioning thermostat itself. It is recommended to check these potential issues and consult a professional if needed for further assistance.
Replace your thermostat.
If you are talking about the thermostat in your engine, the two have nothing to do with eachother. If there is no air at all coming out the vents, I suggest it is your blower motor.
have you changed the battery in the thermostat?
You might have problem with thermostat which you should fix, or it is a fuse. You should go to mechanic for a check.
Wrong thermostat? Wrong installation procedure?
To turn off the thermostat in your home, locate the power switch or button on the thermostat and simply switch it to the "off" position. This will stop the thermostat from controlling the temperature in your home.
To turn on the thermostat in your home, locate the power switch or button on the thermostat and set it to the "on" position. Then, adjust the temperature setting to your desired level.
Try replacing your thermostat.
To turn off the thermostat, locate the power switch or button on the device and switch it to the "off" position. This will stop the thermostat from controlling the temperature in your home.
It takes a 5 volt signal from the Quad module or PCM to turn the fan on. Check voltage going threw plug.
If your engine is overheating and has no obvious leaks then suspect the thermostat. Of course you can remove it and check it, but the best thing to do is just replace it if it is suspect. It should be replaced every time you service the cooling system. when you turn your heater on the it wont blow hot air
Its located on the lower radiator hose its called the thermostat housing it comes with a housing and thermostat together u wont miss it